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Section 06 10 00 - Rough Carpentry Part 1 General 1.1 Section Includes A Grimm + Parker Project No. 21480.00 WAVERLY ELEMENTARY SCHOOL HOWARD COUNTY PUBLIC SCHOOL SYSTEM SECTION 06 10 00 - ROUGH CARPENTRY PART 1 GENERAL 1.1 SECTION INCLUDES A. Preservative treated wood materials. B. Fire retardant treated wood materials. C. Miscellaneous framing and sheathing. D. Communications and electrical room mounting boards. E. Concealed wood blocking, nailers, and supports. F. Miscellaneous wood nailers, furring, and grounds. 1.2 RELATED REQUIREMENTS A. Section 01 61 16 - Volatile Organic Compound (VOC) Content Restrictions. 1.3 REFERENCE STANDARDS A. ASTM D2898 - Standard Test Methods for Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing. B. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials. C. AWPA U1 - Use Category System: User Specification for Treated Wood; American Wood Protection Association. D. PS 20 - American Softwood Lumber Standard; National Institute of Standards and Technology (Department of Commerce). 1.4 SUBMITTALS A. See Section 01 30 00 - Administrative Requirements, for submittal procedures. B. Product Data: Provide technical data on wood preservative materials and application instructions. C. LEED Submittals: Submit applicable LEED Submittal Form for each different product made of sustainably harvested wood, salvaged and reused wood, wood fabricated from recovered timber, as well as locally-sourced wood, as specified in Section 01 35 15. D. LEED Submittal: Provide documentation indicating no added urea formaldehyde for composite wood, and agrifiber products, inlcuding but not limited to plywood, particle board, and fiber board. E. LEED Submittal: Certificates for Credit MR 7: Chain-of-custody certificates certifying that products specified to be made from certified wood comply with forest certification requirements. Include vendor invoice indicating Chain of Custody number and wood products listed per requirements in Section 01 60 00 Product Requirements. 1.5 DELIVERY, STORAGE, AND HANDLING A. General: Cover wood products to protect against moisture. Support stacked products to prevent deformation and to allow air circulation. B. Fire Retardant Treated Wood: Prevent exposure to precipitation during shipping, storage, or installation. ROUGH CARPENTRY 06 10 00 - 1 Grimm + Parker Project No. 21480.00 WAVERLY ELEMENTARY SCHOOL HOWARD COUNTY PUBLIC SCHOOL SYSTEM PART 2 PRODUCTS 2.1 GENERAL REQUIREMENTS A. Dimension Lumber: Comply with PS 20 and requirements of specified grading agencies. 1. If no species is specified, provide any species graded by the agency specified; if no grading agency is specified, provide lumber graded by any grading agency meeting the specified requirements. 2. Grading Agency: Any grading agency whose rules are approved by the Board of Review, American Lumber Standard Committee (www.alsc.org) and who provides grading service for the species and grade specified; provide lumber stamped with grade mark unless otherwise indicated. B. Lumber fabricated from old growth timber is not permitted. C. Forest Certification: To the extent necessary to meet required LEED threshold, provide wood products made from forests certified by an FSC-accredited certification body. D. Composite Wood installed within the building waterproofing envelope: No added urea formaldehyde resins. 2.2 DIMENSION LUMBER FOR CONCEALED APPLICATIONS A. Sizes: Nominal sizes as indicated on drawings, or custom sizes where necessary to complete Work for special details shown on the drawings, S4S. B. Moisture Content: S-dry or MC19. C. Miscellaneous Framing, Blocking, Nailers, Grounds, and Furring: 1. Lumber: S4S, No. 2 or Standard Grade. 2. Boards: Standard or No. 3. 2.3 CONSTRUCTION PANELS A. Communications and Electrical Room Mounting Boards: PS 1 A-D plywood, or medium density fiberboard; 3/4 inch thick; flame spread index of 25 or less, smoke developed index of 450 or less, when tested in accordance with ASTM E84. 2.4 ACCESSORIES A. Fasteners and Anchors: 1. Metal and Finish: Stainless steel for high humidity and preservative-treated wood locations, unfinished steel elsewhere. 2.5 FACTORY WOOD TREATMENT A. Treated Lumber and Plywood: Comply with requirements of AWPA U1 - Use Category System for wood treatments determined by use categories, expected service conditions, and specific applications. 1. Fire-Retardant Treated Wood: Mark each piece of wood with producer's stamp indicating compliance with specified requirements. 2. Preservative-Treated Wood: Provide lumber and plywood marked or stamped by an ALSC-accredited testing agency, certifying level and type of treatment in accordance with AWPA standards. B. Fire Retardant Treatment: ROUGH CARPENTRY 06 10 00 - 2 Grimm + Parker Project No. 21480.00 WAVERLY ELEMENTARY SCHOOL HOWARD COUNTY PUBLIC SCHOOL SYSTEM 1. Exterior Type: AWPA U1, Category UCFB, Commodity Specification H, chemically treated and pressure impregnated; capable of providing a maximum flame spread rating of 25 when tested in accordance with ASTM E84, with no evidence of significant combustion when test is extended for an additional 20 minutes both before and after accelerated weathering test performed in accordance with ASTM D2898. a. Kiln dry wood after treatment to a maximum moisture content of 19 percent for lumber and 15 percent for plywood. b. Treat all exterior rough carpentry items. c. Do not use treated wood in direct contact with the ground. d. Treat wood blocking installed in built-up thickness for roofing terminations except top layer in direct contact with roofing membrane. 2. Interior Type A: AWPA U1, Use Category UCFA, Commodity Specification H, low temperature (low hygroscopic) type, chemically treated and pressure impregnated; capable of providing a maximum flame spread rating of 25 when tested in accordance with ASTM E84, with no evidence of significant combustion when test is extended for an additional 20 minutes. a. Kiln dry wood after treatment to a maximum moisture content of 19 percent for lumber and 15 percent for plywood. b. Treat rough carpentry items as indicated . c. Do not use treated wood in applications exposed to weather or where the wood may become wet. C. Preservative Pressure Treatment of Lumber Above Grade: AWPA U1, Use Category UC3B, Commodity Specification A using waterborne preservative to 0.25 lb/cu ft retention. 1. Kiln dry lumber after treatment to maximum moisture content of 19 percent. 2. Treat lumber in contact with roofing, flashing, or waterproofing. 3. Treat lumber in contact with masonry or concrete. 4. Treat lumber less than 18 inches above grade. 5. Treat lumber in other locations as indicated. 6. Preservative Pressure Treatment of Plywood Above Grade: AWPA U1, Use Category UC2 and UC3B, Commodity Specification F using waterborne preservative to 0.25 lb/cu ft retention. a. Kiln dry plywood after treatment to maximum moisture content of 19 percent. b. Treat plywood in contact with roofing, flashing, or waterproofing. c. Treat plywood in contact with masonry or concrete. d. Treat plywood less than 18 inches above grade. e. Treat plywood in other locations as indicated. D. Preservative Pressure Treatment of Lumber in Contact with Soil: AWPA U1, Use Category UC4A, Commodity Specification A using waterborne preservative to 0.4 lb/cu ft retention. 1. Restrictions: Do not use lumber or plywood treated with chromated copper arsenate (CCA) in exposed exterior applications subject to leaching. PART 3 EXECUTION 3.1 INSTALLATION - GENERAL A. Select material sizes to minimize waste. B. Reuse scrap to the greatest extent possible; clearly separate scrap for use on site as accessory components, including: shims, bracing, and blocking. ROUGH CARPENTRY 06 10 00 - 3 Grimm + Parker Project No. 21480.00 WAVERLY ELEMENTARY SCHOOL HOWARD COUNTY PUBLIC SCHOOL SYSTEM C. Where treated wood is used on interior, provide temporary ventilation during and immediately after installation sufficient to remove indoor air contaminants. 3.2 BLOCKING, NAILERS, AND SUPPORTS A. Provide framing and blocking members as indicated or as required to support finishes, fixtures, specialty items, and trim. B. In framed assemblies that have concealed spaces, provide solid wood fireblocking as required by applicable local code, to close concealed draft openings between floors and between top story and roof/attic space; other material acceptable to code authorities may be used in lieu of solid wood blocking. C. In metal stud walls, provide continuous blocking around door and window openings for anchorage of frames, securely attached to stud framing. 3.3 INSTALLATION OF CONSTRUCTION PANELS A. Communications and Electrical Room Mounting Boards: Secure with screws to studs with edges over firm bearing; space fasteners at maximum 24 inches on center on all edges and into studs in field of board. 1. At fire-rated walls, install board over wall board indicated as part of the fire-rated assembly. 2. Where boards are indicated as full floor-to-ceiling height, install with long edge of board parallel to studs. 3. Install adjacent boards without gaps. END OF SECTION ROUGH CARPENTRY 06 10 00 - 4 Grimm + Parker Project No. 21480.00 WAVERLY ELEMENTARY SCHOOL HOWARD COUNTY PUBLIC SCHOOL SYSTEM SECTION 06 20 00 - FINISH CARPENTRY PART 1 GENERAL 1.1 SECTION INCLUDES A. Finish carpentry items. 1.2 RELATED REQUIREMENTS A. Section 01 61 16 - Volatile Organic Compound (VOC) Content Restrictions. 1.3 REFERENCE STANDARDS A. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials. B. AWI/AWMAC/WI (AWS) - Architectural
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